Fiber::Scheduler#io_pread

io_pread(io, buffer, from, length, offset) → read length or -errno

VALUE
rb_fiber_scheduler_io_pread(VALUE scheduler, VALUE io, rb_off_t from, VALUE buffer, size_t length, size_t offset)
{
    VALUE arguments[] = {
        io, buffer, OFFT2NUM(from), SIZET2NUM(length), SIZET2NUM(offset)
    };

    return rb_check_funcall(scheduler, id_io_pread, 5, arguments);
}

Invoked by IO#pread or IO::Buffer#pread to read length bytes from io at offset from into a specified buffer (see IO::Buffer) at the given offset.

This method is semantically the same as io_read, but it allows to specify the offset to read from and is often better for asynchronous IO on the same file.

The method should be considered experimental.

See also #fiber #io_pwrite #close #io_read also in 4.1 · 4.0 · 3.4 · 3.2

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